79. Predict the output or error(s) of the following c code

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 main()
{
	char *p;
	int *q;
	long *r;
	p=q=r=0;
	p++;
	q++;
	r++;
	printf("%p...%p...%p",p,q,r);
}

Answer:
0001…0002…0004

Explanation:
++ operator when applied to pointers increments address according to their corresponding data-types.